Indicator for carpet looms



July 21, 1931. c BARRETT 1,815,822

INDICATOR FOR CARPET LOOMS Filed Sept.- 29. 1930 Fig. 3.

W41, Inventor, I U CharlesEdward Barrett Qui -716x64 Aflorney.

i aienieajui' i, 1931f;

jciiAnLEs EDWARD' ARRET or YONKERSQNEWYYOIRK, ASSIGNOR TO-ALEXANDEsiyii'rn: & soNscARr T -COMPANY, OF,YONKERS,;1\TEW' YORK, A CORPORATIONor NEW YORK INDICATOR r03 oARrET Looms Application filed Se temb r-2e;1930. Serial No.14a4,990f.

-In theweaving of carpets having a repeat pattern it is necessary thatthe pattern blocks beeach comprised as nearfas'may be in the- I samenumber of 'shuttle threadsjor cross rows oftufts and within the s melengths of carpet, and this, not only'asto different parts of the carpetwoven on :the same loom, but

also as to carpets woven on difl'erent looms (and running on the samepattern, so that when successive breadths are'placedside by side therewill be a proper matching of the pattern between them. To maintain thepat,- Y tern blocks of proper lengthrequires especial I watchfulness onthe part of the attendant in the case of loomswherein the carpet isWoven with a ground ofwarp' and weft threads and pattern surface" formedby pile threads;

which carry the pattern and are fed from a separate pile beam from thewarp beams ground. p e

Shouldithe tension on thepile threads be from which the warp threads arefed for the too great they will be drawn too tightly over the pile wiresand apattern blockwill run over more than the intended number of crossrows, andif the tension is too light a pattern block will be taken' upin'less than the intende'dnumber of cross rows. As thethreads tain theproper tension at the weaving point are drawn from the pile beam and itsdiameter to the top ofthe'threadschanges it be comes necessary to makeadjustments to main- It is therefore to be expected that a pattern blockwillnot becomprised accurately in the intended nuniberflof'cross rows,and, while the pattern block may-readily keep closely enough totheintended number of cross rows so that the error will escape generalobservation, yet the errorwill be apparent' to the attendant if meansare provided to informher each time that the number of rows have V 7been woven in which thepattern block is to be comprised;

In case that a patternblock run over 3 and is too long,the tension onthepile threads I v I is reduced so thatthe i'ext pattern block will, vrunshort, and in case thata'pattern block 2 hasbrunshort the'tension isincreased so that the next pattern block will vrun over; ,In

this way the error will be keptfrom becom ing 'cumulati veand means toassist the at te nda-nt noting any departure is one of'the objects of,this invention.

It is also important for the proper matching oibreadths that a givennumber-of cross 5 rows be comprised within the same length of carpet,for variation in this regard may also. result from altered tensionandparticul'arly from variations in the size of the pile threads;

This variation may also arise in weaving on 60 Jacquard looms; A furtherob ect is to provide means to assist the attendant in preserving theweave uniform in this respect.

This means' consists in an indicator suitably located where it can'beconveniently 6 i watched bythe attendant while she is also watching theoperation of the loom and the forming of the pattern, such indicatorbeing is to be comprised.

In 'the accompanying sheet of drawings whichforn sapart of'thisdescription, Figure 11s a diagrammatic side elevation of a pilewire loom inside the frame with an Pl- 7 indicator whichembodies thisinvention.

T Fig. 2 is an enlarged plan view of the breast beam, pilewires and,indicator. Fig.3 is anelevation of the same.

9for the pile or tufts on which the pattern the margin of the carpet andusually have cuttersll, 11 formed at their ends to cut the loops andform tufts as the-wires are with 90 drawn. The pile wires remain in thewoven carpet for a distance as it passes over the top Q flange or plate120i the breast beam 13 A number of the pile wires lie in a row sideby", 7 side in the carpet spaced by the pile threads, V looped overthem. A wire is withdrawn at Y one endof the row and is inserted at theother I end of the row where the weaving is taking "place at eachoperation of the loom, and the intermediate wires travel for a short dis1 In the loom, warp beams 6, 6 supplythe I warp threads 7, fortlieground weave, and a pile beam 8 supplies the threads or yarns 9,

tance with the carpet. The carpet passes after the Wires have beenwithdrawn to a draw-01f roll 14. I

" An indicator braol et 15 is bolted to the unj 1 derside of thebreast-beam plate. This supl ports iaitoothe'd Wheel 16 through "a shaftl-7. The toothed wheel projects through a :sl-ot the breast beam plateand is engaged by the row of pile wires where they project beyond th'eedge of the 'carpet. fThesewires fact'asj I rack'teethto'drivethetoothed wheel. "'Onthe."

shaft with the toothed Wheel is ,aworm 18 which engages a worm wheel 19'on'averti- I cal shaft 20, and the vertical shaft carries an Vindicator 21. The indicator is at the edge I 02E the breast-beamplate-close 'by where the Weaving i-is taking place, so that :both :canbe conveniently Watched together by the, at-

tendant. 1 v 21; The number of teeth intt'he toothed Wheel multipliedby-theratio-of the worm andworm whee]. equals the number of 'pileloopsor tuft rowsthat are to comprise each pattern block, and -.at--=eaichrevolution of the indicator the 25 attendant watches for the completionof a v pattern :blocl; ':a-nd the commencement of the neX-t (patternblock at the weaving point and notes by the indicator how much it hasoverrun-or fallen short and alters the tensions as 80 required topreventany error from accumulati-ng; There is a mainindicator point andgraduations on either side by which the amount of errorean be read, andthe amount 1 of z-required change in adjustment estimated. a

85 j Also the pattern block and the numberoifrowsin which it should becomprised may he I measured andif-any departure from standard is toundcorrection is made in the force with which the weave isrammed.

1. The combination with a carpet loom, of V pile-wires carried-by theWOVQII -carpet, a toothed wheel in engagement with the pro .t jectirig,ends ofthe pile'wires, andjan,

' 4+3 ca' torf'supported from the framework of the loom and driven fromthe toothed Wheel.

2. The combination iwith a carpet :loom having a breast-beam plate, ofpile Wires carried by the woven carpet, an indicator 6o bracketiattachedto the breastbeam plate,

an-ii idicator mounted thereon,"and a toothed [wheel innengagement withthe projecting V endsjo fthezpile wires and connected with the indicatorfor the operation thereof. t 1 "CHARLES .E.

